#include<iostream>
using namespace std;
class Time
{public:
void set_time(void);
void show_time(void);
private:
int hour;
int minute;
int sec;
};
void Time::set_time(void)
{cin>>hour;
cin>>minute;
cin>>sec;
}
void Time::show_time(void)
{cout<<hour<<":"<<minute<<":"<<sec<<endl:
}
Time t;
int main()
{t.set_time();
t.show_time();
return 0;
}